Urine nitrification and sewer discharge to realize in-sewer denitrification to simplify sewage treatment in Hong Kong

F. Jiang, Y. Chen, Hamish Mackey, G. H. Chen, M. C M Van Loosdrecht

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The chemically enhanced primary treatment works in Hong Kong will be upgraded for biological nitrogen removal. This study proposed a novel approach to waive the upgrading by urine sourceseparation, onsite nitrification and discharge of nitrified urine into sewers to achieve in-sewer denitrification. Human urine was collected and a lab-scale experiment for full urine nitrification was conducted. The results showed that full nitrification was achieved with alkaline addition. Simulation of nitrified urine discharge into an 8-km pressure main in Hong Kong was conducted with a quasi-2D dynamic sewer model developed from a previously calibrated sewer biofilm model. It was assumed that 70% of the residents' urine was collected and fully nitrified on-site. The simulation results revealed that the proposed approach is effective in removal of nitrogen within the sewer, which decreases ammonia-N at the sewer outlet to a level required for secondary effluent discharge in Hong Kong.

Original languageEnglish
Pages (from-to)618-626
Number of pages9
JournalWater Science and Technology
Volume64
Issue number3
DOIs
Publication statusPublished - 2011
Externally publishedYes

Fingerprint

Sewage treatment
Nitrification
Denitrification
Sewers
sewage treatment
urine
nitrification
denitrification
Nitrogen removal
nitrogen
Biofilms
simulation
biofilm
Effluents
Ammonia
ammonia
effluent
Nitrogen
experiment
Experiments

Keywords

  • Denitrification
  • Human urine
  • Nitrification
  • Sewer modeling

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology

Cite this

Urine nitrification and sewer discharge to realize in-sewer denitrification to simplify sewage treatment in Hong Kong. / Jiang, F.; Chen, Y.; Mackey, Hamish; Chen, G. H.; Van Loosdrecht, M. C M.

In: Water Science and Technology, Vol. 64, No. 3, 2011, p. 618-626.

Research output: Contribution to journalArticle

@article{f5e983f2bd24489aa84c2415b2cb8ee7,
title = "Urine nitrification and sewer discharge to realize in-sewer denitrification to simplify sewage treatment in Hong Kong",
abstract = "The chemically enhanced primary treatment works in Hong Kong will be upgraded for biological nitrogen removal. This study proposed a novel approach to waive the upgrading by urine sourceseparation, onsite nitrification and discharge of nitrified urine into sewers to achieve in-sewer denitrification. Human urine was collected and a lab-scale experiment for full urine nitrification was conducted. The results showed that full nitrification was achieved with alkaline addition. Simulation of nitrified urine discharge into an 8-km pressure main in Hong Kong was conducted with a quasi-2D dynamic sewer model developed from a previously calibrated sewer biofilm model. It was assumed that 70{\%} of the residents' urine was collected and fully nitrified on-site. The simulation results revealed that the proposed approach is effective in removal of nitrogen within the sewer, which decreases ammonia-N at the sewer outlet to a level required for secondary effluent discharge in Hong Kong.",
keywords = "Denitrification, Human urine, Nitrification, Sewer modeling",
author = "F. Jiang and Y. Chen and Hamish Mackey and Chen, {G. H.} and {Van Loosdrecht}, {M. C M}",
year = "2011",
doi = "10.2166/wst.2011.491",
language = "English",
volume = "64",
pages = "618--626",
journal = "Water Science and Technology",
issn = "0273-1223",
publisher = "IWA Publishing",
number = "3",

}

TY - JOUR

T1 - Urine nitrification and sewer discharge to realize in-sewer denitrification to simplify sewage treatment in Hong Kong

AU - Jiang, F.

AU - Chen, Y.

AU - Mackey, Hamish

AU - Chen, G. H.

AU - Van Loosdrecht, M. C M

PY - 2011

Y1 - 2011

N2 - The chemically enhanced primary treatment works in Hong Kong will be upgraded for biological nitrogen removal. This study proposed a novel approach to waive the upgrading by urine sourceseparation, onsite nitrification and discharge of nitrified urine into sewers to achieve in-sewer denitrification. Human urine was collected and a lab-scale experiment for full urine nitrification was conducted. The results showed that full nitrification was achieved with alkaline addition. Simulation of nitrified urine discharge into an 8-km pressure main in Hong Kong was conducted with a quasi-2D dynamic sewer model developed from a previously calibrated sewer biofilm model. It was assumed that 70% of the residents' urine was collected and fully nitrified on-site. The simulation results revealed that the proposed approach is effective in removal of nitrogen within the sewer, which decreases ammonia-N at the sewer outlet to a level required for secondary effluent discharge in Hong Kong.

AB - The chemically enhanced primary treatment works in Hong Kong will be upgraded for biological nitrogen removal. This study proposed a novel approach to waive the upgrading by urine sourceseparation, onsite nitrification and discharge of nitrified urine into sewers to achieve in-sewer denitrification. Human urine was collected and a lab-scale experiment for full urine nitrification was conducted. The results showed that full nitrification was achieved with alkaline addition. Simulation of nitrified urine discharge into an 8-km pressure main in Hong Kong was conducted with a quasi-2D dynamic sewer model developed from a previously calibrated sewer biofilm model. It was assumed that 70% of the residents' urine was collected and fully nitrified on-site. The simulation results revealed that the proposed approach is effective in removal of nitrogen within the sewer, which decreases ammonia-N at the sewer outlet to a level required for secondary effluent discharge in Hong Kong.

KW - Denitrification

KW - Human urine

KW - Nitrification

KW - Sewer modeling

UR - http://www.scopus.com/inward/record.url?scp=80051489978&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80051489978&partnerID=8YFLogxK

U2 - 10.2166/wst.2011.491

DO - 10.2166/wst.2011.491

M3 - Article

VL - 64

SP - 618

EP - 626

JO - Water Science and Technology

JF - Water Science and Technology

SN - 0273-1223

IS - 3

ER -